@CHIP-RTOS - TCP/IP Error Codes

//  Possible client error codes
#define PPP_INV_COMPORT  -1 // Invalid serial port or PPP server already uses port.
        // This error code also occurs, if
        // the PPP client is interrupted while dialing
        // (e.g. user break by setting the flag modem_break
        //  in the  pppclient_init structure
        //  or another modem error.
#define PPP_INUSE        -2  // Client is already active.
#define PPP_INV_USER     -3  // Invalid user or password
#define PPP_OPEN_FAIL    -4  // Opening the interface failed.
#define PPP_INV_DEV      -5  // Interface was not found.
#define PPP_IPCFG_FAIL   -6  // Got an invalid IP from the peer.
#define PPP_CONNECT_FAIL -7  // Connection to the peer failed.
#define PPP_CLOSETIMEOUT -8  // Closing connection timed out.

// Possible states of a PPP client connection
#define PPP_NOTAVAIL    -1    // Client is not running
#define PPP_LNKDOWN      0    // Link is down
#define PPP_LNKWILLOPEN  1    // Link opening in progress
#define PPP_LNKUP        2    // Link is established
#define PPP_HALTED       3    // Halted by PPP_Client_Pause() call

#define DNS_ERROR_ILLEGAL_ARGUMENT     -1   // An argument with an invalid value was passed
#define DNS_ERROR_RESOURCE_LACK        -2   // Lack of a resource such as memory or sockets
#define DNS_ERROR_SERVERS_UNREACHABLE  -3   // No name server could be reached
#define DNS_ERROR_NO_RESOLUTION        -4   // No resolution could be found

// Possible error flags for PKI certificate add function.
// (Error codes can be bit-wise combinations of these flags.)
#define PKI_CERT_BADCERT        0x01  // Critical error
#define PKI_CERT_REVOKED        0x02  // Revoked certiticate
#define PKI_CERT_EXPIRED        0x04  // Expired certificate
#define PKI_CERT_UNMATCHED      0x08  // Identity not matched
#define PKI_CERT_UNKNOWNCA      0x10  // CA is unknown
#define PKI_CERT_NOTVERIFIED    0x20  // The mentioned CA fails to verify the certificate